The radio station that employed Mel Greig, left, and Michael Christian, who made the prank call to the hospital where Kate Middleton was being treated for acute morning sickness, is being investigated by Australian regulators. SOUTHERN CROSS AUSTEREO/EPA

Jacintha Saldhana hanged herself three days after Australian DJs Mel Greig and Michael Christian called the hospital where Kate Middleton was being treated for acute morning sickness . She apparently didn't question the DJs' admittedly terrible accents and passed the call onto another nurse, who talked freely about Middleton's condition.

Jacintha Saldanha committed suicide by hanging three days after she unknowingly became involved in a hoax call by an Australian radio station. AFP PHOTO

The radio station heavily promoted the clip until Friday, when Saldanha's body was found, and has since pledged all advertising revenue through the end of the year to the nurse's family, although station executives earlier defended prank calls as a standard part of radio station culture.

That's certainly true, but now Australian regulators will decide in an expedited investigation whether the call violated generally accepted standards of decency. Other possible violations of the Commercial Radio Australia Codes of Practice & Guidelines include: invasion of privacy; broadcasting someone who had been recorded without their knowledge and without receiving express consent prior to broadcast; and treating participants in a "highly demeaning or highly exploitative manner."

Exploitative is defined "as clearly appearing to purposefully debase or abuse a participant for the enjoyment of others, and lacking moral, artistic or other values."

Meanwhile, the chief inspector handling the suicide in London says detectives will reach out to police in Australia to collect "relevant evidence," the Associated Press reports.